After upgrading from Ubuntu 23.04 to 23.10 I noticed that there's no Firmware Updater, so I installed it manually but application doesn't work correctly. It starts, white blank window with spinning logo Ubuntu circle arrives and it stays until I stop it.Reading various threads, I realized that this is a fairly common issue. I installed Gnome Firmware, which starts instantly but I can't upgrade UEFI.dbx because of Update error "Blocked executable in the ESP" it's to common issue.Any ideas? Thanks in advance.



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